I realize I'm bumping a really old thread, but I figured this would come up in searches for the component as the first result, so I'm posting it here.

I've been using foo_uie_vis_channel_spectrum as part of a custom setup originally based on FooNight that I heavily modified. I did leave in the foo_uie_vis_channel_spectrum because I love how it looks. There are some bugs, and supposedly it's crashware, but it worked just fine for me, or so I thought until last week.

I'm a software developer and noticed some weird behavior, mostly notably tooltips not appearing when they should appear. I discovered that windows was sending mouse move events continuously to applications, whether the mouse had actually moved or not. This is obviously a bad thing and could have lots of unintended consequences. I discovered that when foobar was minimized the problem went away. I then started uninstalling components and discovered that it was directly related to foo_uie_vis_channel_spectrum. I couldn't find a replacement spectrum that I liked so I decided to see if I could change options. Low-and-behold I saw that I didn't have "fast pseudo-transparent mode" enabled, and that was the source of the problem. For those (like me) who feel compelled to keep using it, make sure that option is checked.

There seems to be a dearth of decent uie_vis plugins that do this kind of work which is unfortunate.